DC MOTOR CONTROL SYSTEM

A system for controlling the speed of a DC motor by means of a field control in which a rectifier in the form of a thyristor is connected to the armature of the motor for supplying a current in only one direction and is controlled to constitute a constant current control means. An integrator having...

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Bibliographische Detailangaben
Hauptverfasser:	SAKAI Y,JA, ONODA Y,JA, NARITA T,JA, TASHIRO K,JA, SHIMA S,JA
Format:	Patent
Sprache:	eng
Schlagworte:	CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY ELEVATORS ESCALATORS OR MOVING WALKWAYS GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS GENERATION HAULING HOISTING LIFTING PERFORMING OPERATIONS TECHNICAL SUBJECTS COVERED BY FORMER USPC TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ARTCOLLECTIONS [XRACs] AND DIGESTS TRANSPORTING
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Beschreibung
Zusammenfassung:	A system for controlling the speed of a DC motor by means of a field control in which a rectifier in the form of a thyristor is connected to the armature of the motor for supplying a current in only one direction and is controlled to constitute a constant current control means. An integrator having a saturation characterisitc is provided for integrating the difference between a reference speed and an actually detected speed of the motor. The output of the integrator is added to the reference speed and the result of addition is compared with the actually detected speed so as to apply a field current instruction signal to a field current control means provided with a current negative feedback means.